Hollow concrete wall



G. J. ENGERT Sept.. 4, 1923.

Original Filed Feb. 6, 1922 emma.'

Patented Sept. 4, 1923.

` narran srares Parser seems.

GEORGE J'. ENGERT, 0F SPOKANE, WASHINGTON.

HOLLOW CONCRETE WALL. I

Original application filed YFebruary 6, 1922, Serial. No.- 534,605. Divided andatliis applicationlled' September 27, 19,22.

To all 'whom' t may concern Be it known that I, GEORGE J. ENGERT, a citizen of the United States, residing at Spokane, in the county of Spokane and State of Washington, have inventedcertain new and useful Improvements in lHollow Concrete Walls, of which the following is a specification. Y

This application is a division of an ap-' plication filed by me February 6, 1922, Serial No. 534,605.

The present invention has for its object the provision of a wall which will possess the strength of a solid wall andwill contain an air chamber which may be a dead-air chamber to avoid the presence of moisture and transmission of sound or may provide circulation through the entire height of the wall to permit foul air to escape through it beneath the roof of the building. The invention is illustrated in the accompanying drawing and resides in certain novel features which willy be hereinafter first fully described and then more particularly pointed out in the appended claims.

The drawing isa perspective view of a portion of a wall embodying my invention.

In constructing a wall according to my invention, I employ inner and outer false. work or forms, the height of which `is increased as the work progresses. At intervals corresponding to the courses of thewall,vv tension wires 3 are secured in and extend through the falsework to prevent outward collapse or spreading of the falsework. The foundation of the building may bea solid structure or may be hollow, as preferred, and the falsework will. of course, rise from the foundation at the opposite sides of the same. Vertical reinforcing rods 5 are embedded in the foundation and rise therefrom at suit- .able intervals to Vextend to the height to which it isdesired to ca r'ry thewall. Upon the upper surface of the foundation andk upon each course of the wall as it is formed, I place a base plate 6 with its side edges at opposite sides of the longitudinal centerof the wall and between Vthe reinforcing rods 5. Along the side edges of this base plate 6, I provide openings in which are secured tie wires 8 which are wrapped aboutand secured to the vertical reinforcing rods so as to hold the base .plate firmly in position.v

Y Substantially U-shaped slits are formed in the .base plate,thereby producing tongues 9 Serial No. 590,872.

which may be struck up from the slitsthe spaces originally occupied by the several'y tongues producing openings Vl() through which air may circulate kin the completed wall. The base plate having been secured in position, a form or core is` placed upon the base plate so as to rest thereon-between the y the falsework and directed into the spaces between saidufalseworkand the respective sides ofthe form, the pouring being conreaches the topY of the form. The concrete is Vthen permitted to partly set and when ithas' set suiiiciently to permit movement of the form, the form islifted to a. point above the partly finished wall. A secondl base plate 6 is then placed in'pos'ition over thepartlyy finished wall andthe described operationis repeated until'the wallfhas reached the de sired height, each successive base. plate 6y being left embedded; inthe wall and 'con-v stitutinga reinforcement therefor.

the wall is finished, the falsework is, 'of course, removed Aand the projecting ends of the tension wires 3 are cut off VfiushV with the les surfaces of'thewall. At proper intervals,

removable cores: may be placed in position in openings provided therefor inthe falsef i work so that sockets or openings, indicated `29o It will be readily understood from the at 22, Vwill be produced.

foregoing description, taken vin connection with the accompanying drawing, that I have devised a hollow concrete wall which may be rapidly produced and a strong structure obtained at a low cost. f Y

Having thus described the invention, what is claimed as` new ist@V i 1.V A hollow concrete .wall having 'vertical reinforcing rods embedded therein between `the sides ofthe wall and the yhollow cen. tra] portionthereof, and horizontally disposed plates embedded in thewall at interd vals and bridginggthe central hollow space, .f

said plates khaving openings therethrough and being 'connected forcing rods.v Y Y Y -2. A hollow concrete wall having vertical reinforcingrods embedded therein between the sides ofthe wall and the central hollow .105' with the vertical reinfi 70. Y tinued `until the level of the poured concrete i 5 oreinof rods saidy Jlates havin0r oeninfrs C) 5 D C therethrough in the portions tliereoff'rwhieh bridge therhollow of the Wall.

3. A hollow concrete Wall having a central longitudinal Chamber, vertical reinforcing yrods embedded in the Wall at opposite sides ot said chamber, and vertically spaced plates embeddedin the .walland Connected with the vertical reinforcing rods, said plates bridgfingthe chamber in the Wall.

In testimony whereof I atliX my signature.

GEORGE J. ENGERT 

